Former staffer for Rep. Sheila Jackson Lee accused of posting senators' private information

A Democratic congressional staffer was arrested Wednesday and accused of posting the personal information of at least one Republican senator during last week's hearing about sexual assault claims against Supreme Court nominee Brett Kavanaugh, authorities said.

U.S. Capitol Police said 27-year-old Jackson Cosko was charged with making public restricted personal information, witness tampering, threats in interstate communication, unauthorized access of a government computer, identity theft, second-degree burglary and unlawful entry. Police added that the investigation was continuing and more charges could be filed.

Senior congressional sources tell Fox News that Cosko most recently worked as a staffer for Rep. Sheila Jackson Lee, D-Texas. He also had worked with Sen. Maggie Hassan, D-N.H., and former Democratic Sen. Barbara Boxer of California. A LinkedIn page with Cosko's name on it describes him as a "Democratic Political Professional & Cybersecurity Graduate Student."

Personal information of Sens. Lindsey Graham, Mike Lee and Orrin Hatch was posted on their respective Wikipedia pages as the Senate Judiciary Committee questioned Kavanaugh over allegations that he assaulted Christine Blasey Ford at a high school party in the early 1980s. All three have professed their belief that Kavanaugh is innocent of the claims brought against him by Ford, with Graham telling the federal judge "you've got nothing to apologize for" amid a fiery rant denouncing Democrats' handling of the claims.

The intentional publication of the information was first caught by a Twitter bot that automatically tracks any changes made to Wikipedia entries from anyone located in the U.S. Congress and publicizes them on the social media site. The bot account later deleted the tweets because the edits contained personal information. According to the bot, whoever posted the information did so from a computer in the House of Representatives.

The home addresses of the senators appeared to be correct, thought the phone numbers didn't appear to be entirely accurate. A “home” phone number listed for Graham appeared to direct callers to the Sexual Minority Youth Assistance League (SMYAL), a Washington D.C.-based advocacy group.

Fox News' Chad Pergram and Lukas Mikelionis contributed to this report